One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6,8,12,9,11,15,18)(7,10,14,17,13,16,19,20)(21,22)(23,29)(24,32)(25,27)(26,30)(28,34)(31,36)(33,35)(1,2,3,4)(5,7)(6,10)(8,14)(9,13)(11,16)(12,17)(15,19)(18,20)(21,22)(23,26)(24,28)(25,27)(29,30)(31,35)(32,34)(33,36)(6,11)(8,15)(10,16)(14,19)(21,23,25,31)(22,26,27,35)(24,33,34,30)(28,36,32,29)(7,13)(10,16)(14,19)(17,20)(22,27)(26,35)(28,32)(29,36) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.